19972490

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22441}}^1$

素因数の和:22537

約数の個数: 16

約数和(自身を含む): 36356040

約数和(自身を除く): 16383550

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 22441, 44882, 112205, 224410, 1997249, 3994498, 9986245, 19972490]

約数ペア:

[(1, 19972490), (2, 9986245), (5, 3994498), (10, 1997249), (89, 224410), (178, 112205), (445, 44882), (890, 22441)]